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Finding the Fourth Proportional to 586.08, 808.86 and 438.45

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Solution

The fourth proportional to 586.08, 808.86 and 438.45 is: 605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.08 : 808.86 = 438.45 : x
  2. Step 2: Convert to fraction form
    586.08/808.86 = 438.45/x
  3. Step 3: Cross multiply
    586.08x = 808.86 × 438.45
  4. Step 4: Simplify right side
    586.08x = 354,644.67
  5. Step 5: Solve for x
    x = 354,644.67/586.08
  6. Step 6: Final answer
    x = 605.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.